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Discussion Starter · #4 ·
upgrades are

- pss10 trigger and piston sear
- pss10 piston (cut the airbreak and used stock o-ring)
- pss10 spring guide
- pss10 spring guide stopper
- stock cylinder head
- stock cylinder.

i tried both stock bucking and firefly bucking and also tried pss10 cylider head from my vsr-10 prosniper. but the reading are still the same. my compression is good too.

another question:

can i cut the stock spring and put it flat or in series with the 170 spring to get a certain fps? we have a limit of 575fps on .20 here where i live and was wondering if i can cut probably about half an inch form the stock spring to get about 550-560fps.
 
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